Red List: the world's most threatened species – interactive

Now in its 50th year, the IUCN red list assesses 76,199 species around the world - of which 22,413 are threatened. The 15 species below are either new additions or have changed status this year. They include Pacific bluefin tuna, Chinese pufferfish and an Australian butterfly that are all threatened with extinction, and the world’s biggest earwig that is now extinct